潮控河口湾岩相类型及沉积模式

doi:10.14027/j.issn.1000-0550.2019.068

潮控河口湾岩相类型及沉积模式——以厄瓜多尔Oriente盆地北部区块上白垩统Napo组LU段为例

doi: 10.14027/j.issn.1000-0550.2019.068

基金项目:

国家重点基础研究发展计划（973计划）项目 2006CB202300

详细信息

作者简介:
：李阳，男，1994年出生，硕士研究生，沉积学及储层地质学，E⁃mail: 1974259412@qq.com

通讯作者:
金振奎，男，教授，E⁃mail: jinzhenkui@188.com

中图分类号: P618.13
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- 被引次数: 0
出版历程
- 收稿日期: 2019-05-22
- 发布日期: 2020-08-10

Lithofacies and Sedimentary Model of Tidal⁃dominated Estuary: A case study of LU interval from Upper Cretaceous Napo Formation, northern Oriente Basin, Ecuador

Funds:

National Basic Research Program of China （973 Program） 2006CB202300

摘要

摘要: 潮控河口湾是厄瓜多尔Oriente盆地北部上白垩统Napo组的主力储层，当前对其识别标志、岩相及沉积分布规律认识不清，建立可靠的潮控河口湾的沉积模式，对于预测油气储层有重要意义。通过研究区LU碎屑岩段岩芯、粒度、测井、薄片以及地化资料的综合分析发现：1）综合岩相类型、地化、垂向序列特征认为其发育潮控河口湾和陆棚；2）研究区潮控河口湾主要发育中河口湾亚相及外河口湾亚相，中河口湾亚相发育潮汐河道、潮坪、高流态沙坪等微相，在测井曲线上呈钟形；外河口湾轴部发育潮汐沙坝、高流态沙坪微相，测井曲线上为箱型；外河口湾两侧为泥质潮坪微相，测井曲线上呈指形；浪基面之下发育泥质陆棚沉积和风暴形成的海绿石席状砂；3）研究区倾向西南，中河口湾的潮汐河道边滩沉积发育在东北部；向西南河道逐渐拓宽，外河口湾轴部潮汐沙坝南北向展布，向两翼泥质含量增高，发育泥质潮坪，呈席状展布。
- 潮控河口湾 /
- 岩相 /
- 沉积模式 /
- Oriente盆地 /
- 上白垩统
Abstract: A predominantly tidal estuary is the main reservoir type in the Upper Cretaceous Napo Formation, northern Oriente Basin, Ecuador, although its identification, lithofacies and sedimentary distribution are unclear at present. Establishing a reliable sedimentary model of the estuary is of great significance for predicting the presence of oil and gas reservoirs. A comprehensive analysis of the core, including grain size, well logging, thin section and geochemical data, found that: (1) The combination of lithofacies, geochemical and vertical sequence characteristics indicates the development of a tidal⁃dominated estuary⁃shelf sedimentary system. (2) The tidal⁃dominated estuary contains middle⁃and outer estuary subfacies. The middle estuary contains tidal channels with an overbanked mixture of flat and salt⁃marsh microfacies, the distribution shown as bell-shaped on the logging curve. Along the axis of the outer estuary, tidal sand bar and upper⁃flow⁃regime sand flat microfacies were developed, producing a box⁃shaped logging curve. Muddy tidal flat microfacies occur on both flanks of the outer estuary, shown as finger⁃shaped logging curve. A muddy shelf and storm⁃formed glauconitic sheet sand developed under the normal wave base. (3) The paleogeography of the study area leans towards the southwest. Tidal channels developed in the middle estuary in the northeast. The southwestern channel gradually widened and north⁃south tidal bars were distributed along the axis of the outer estuary. A sheet⁃like muddy tidal flat developed on the flanks of the estuary.
- tidal⁃dominated estuary /
- lithofacies /
- sedimentary model /
- Oriente Basin /
- Upper Cretaceous

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图 1 厄瓜多尔Oriente盆地研究区的地理位置以及上白垩统Napo组综合柱状图（据刘畅等^[13]）

Figure 1. Location of study area and integrated stratigraphic column of the Upper Cretaceous Napo Formation, northern Oriente Basin, Ecuador (after Liu et al.^[13])

Fig.1

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图 2 厄瓜多尔Oriente盆地北部上白垩统Napo组LU段岩相类型

Figure 2. Lithofacies in the LU interval of the Upper Cretaceous Napo Formation, northern Oriente Basin, Ecuador

Fig.2

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图 3 厄瓜多尔Oriente盆地北部上白垩统Napo组碎屑岩粒度概率累计曲线特征

Figure 3. Cumulative granularity probability curves of clastics in the Upper Cretaceous Napo Formation, northern Oriente Basin, Ecuador

Fig.3

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图 4 厄瓜多尔Oriente盆地北部Napo组LU段砂岩主要镜下特征

Figure 4. Characteristics of sandstone under microscope in the LU interval of the Upper Cretaceous Napo Formation, northern Oriente Basin, Ecuador

Fig.4

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图 5 厄瓜多尔Oriente盆地北部Co⁃1井Napo组LU段岩相、沉积构造、地层倾角测井与古水流方向

Figure 5. Logs of stratigraphy, lithofacies, sedimentary structures, dip and paleocurrent for theNapo LU sandstone, from a cored section of Co⁃1 well, northern Oriente Basin, Ecuador

Fig.5

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图 6 厄瓜多尔Oriente盆地北部上白垩统Napo组LU段典型沉积序列

Figure 6. Microfacies of LU Member of Upper Creataceous Napo Formation, northern Oriente Basin, Ecuador

Fig.6

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图 7 厄瓜多尔Oriente盆地北部上白垩统Napo组LU段 3¹³小层砂体厚度（a）、砂地比（b）以及沉积相分布图（c）

Figure 7. (a) Planar distribution of net sandstone thickness; (b) net⁃to⁃gross, and (c) sedimentary facies of 3¹³ layer, LU Member, Upper Creataceous Napo Formation, northern Oriente Basin, Ecuador

Fig.7

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图 8 杭州湾—钱塘江中河口湾砂质潮坪及外河口湾的泥质潮坪沉积特征

Figure 8. Sedimentary characteristics of sandy tidal flat in middle and muddy tidal flat, outer Hang Zhou Bay⁃Qiantang Estuary

Fig.8

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图 9 厄瓜多尔Oriente盆地北部上白垩统Napo组LU段潮控河口湾沉积模式（据Dalrymple^[7]，有修改）

Figure 9. Depositional model of LU Member of the Upper Cretaceous Napo Formation, northern Oriente Basin, Ecuador (modified from Dalrymple^[7])

Fig.9

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表 1 厄瓜多尔Oriente盆地北部上白垩统Napo组LU段地球化学参数

Table 1

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参考文献(22)

[1]	Dalrymple R W, Zaitlin B A, Boyd R. Estuarine facies models; conceptual basis and stratigraphic implications[J]. Journal of Sedimentary Research, 1992, 62(6): 1130-1146.
[2]	Dalrymple R W, Choi K. Morphologic and facies trends through the fluvial⁃marine transition in tide-dominated depositional systems: A schematic framework for environmental and sequence-stratigraphic interpretation[J]. Earth-Science Reviews, 2007, 81(3/4): 135-174.
[3]	齐永安. 河口湾相模式研究[J]. 地质科技情报，1999，18（1）：45-49. Qi Yong′an. Research on estuarine facies models[J]. Geological Science and Technology Information, 1999, 18(1): 45-49.
[4]	钟大康，漆立新，刘康宁，等. 塔河油田南部石炭系卡拉沙依组沉积相研究[J]. 沉积学报，2009，27（4）：614-621. Zhong Dakang, Qi Lixin, Liu Kangning, et al. Study on sedimentary facies of Carboniferous Kalashayi Formation in the south of Tahe oilfield[J]. Acta Sedimentologica Sinica, 2009, 27(4): 614-621.
[5]	赵霞飞，胡东风，张闻林，等. 四川盆地元坝地区上三叠统须家河组的潮控河口湾与潮控三角洲沉积[J]. 地质学报，2013，87（11）：1748-1762. Zhao Xiafei, Hu Dongfeng, Zhang Wenlin, et al. Tide-dominated estuarine and deltaic deposition of the Upper-Triassic Xujiahe Formation in the Yuanba area, Sichuan Basin[J]. Acta Geologica Sinica, 2013, 87(11): 1748-1762.
[6]	Plink-Björklund P. Stacked fluvial and tide-dominated estuarine deposits in high-frequency (fourth-order) sequences of the Eocene Central Basin, Spitsbergen[J]. Sedimentology, 2005, 52(2): 391-428.
[7]	James N P, Dalrymple R W. Facies models 4: GEOtext 6[M]. Newfoundland: Geological Association of Canada, 2010.
[8]	Leuven J R F W, Braat L, Van Dijk W M, et al. Growing forced bars determine nonideal estuary planform[J]. Journal of Geophysical Research: Earth Surface, 2018, 123(11): 2971-2992.
[9]	van De Lageweg W I, Braat L, Parsons D R, et al. Controls on mud distribution and architecture along the fluvial-to-marine transition[J]. Geology, 2018, 46(11): 971-974.
[10]	White H J, Skopec R A, Ramirez F A, et al. Reservoir characterization of the Hollin and Napo Formations, western Oriente Basin, Ecuador[C]//Tankard A J, Suarez R, Welsink H J. Petroleum basins of South America. AAPG Memoir62: 573-596.
[11]	Shanmugan G, Poffenberger M, Álava J T. Tide-dominated estuarine Facies in the Hollin and Napo (“T” and “U”) formations (Cretaceous), Sacha Field, Oriente Basin, ecuador: reply[J]. AAPG Bulletin, 2000, 84(5): 652-682.
[12]	陈诗望，姜在兴，田继军，等. 厄瓜多尔Oriente盆地南部区块沉积特征[J]. 海洋科学，2008，28（1）：31-35. Chen Shiwang, Jiang Zaixing, Tian Jijun,et al. Sedimentary characteristics in the south block of Orient Basin, Ecuador[J]. Offshore Oil, 2008, 28(1): 31-35.
[13]	刘畅，张琴，谢寅符，等. 厄瓜多尔Oriente盆地东北部区块白垩系层序地层格架及发育模式[J]. 沉积学报，2014，32（6）：1123-1131. Liu Chang, Zhang Qin, Xie Yinfu, et al. Sequence stratigraphic framework and development model of the Cretaceous in northeast block, Oriente Basin, Ecuador[J]. Acta Sedimentologica Sinica, 2014, 32(6): 1123-1131.
[14]	Vallejo C, Tapia D, Gaibor J, et al. Geology of the Campanian M1 sandstone oil reservoir of eastern Ecuador: A delta system sourced from the Amazon Craton[J]. Marine and Petroleum Geology, 2017, 86: 1207-1223.
[15]	赵全基，彭汉昌，张壮域. 中国陆架海绿石分布特征及其意义[J]. 海洋科学，1992（5）：41-44. Zhao Quanji, Peng Hanchang, Zhang Zhuangyu. Distribution properties of glauconites in Chinese shelf sea and their significance[J]. Marine Sciences, 1992(5): 41-44.
[16]	李军，王贵文. 高分辨率倾角测井在砂岩储层中的应用[J]. 测井技术，1995，19（5）：352-357. Li Jun, Wang Guiwen. Applications of high resolution dip log to the study of sand reservoir[J]. Well Logging Technology, 1995, 19(5): 352-357.
[17]	邓平. 微量元素在油气勘探中的应用[J]. 石油勘探与开发，1993，20（1）：27-32. Deng Ping. The application of trace amount of elements in the exploration of oil and gas[J]. Petroleum Exploration and Development, 1993, 20(1): 27-32.
[18]	田景春，张翔. 沉积地球化学[M]. 北京：地质出版社，2016. Tian Jingchun, Zhang Xiang. Sedimentary geochemistry[M]. Beijing: Geological Publishing House, 2016.
[19]	Longhitano S G, Mellere D, Steel R J, et al. Tidal depositional systems in the rock record: A review and new insights[J]. Sedimentary Geology, 2012, 279: 2-22.
[20]	Ichaso A A, Dalrymple R W. Tide- and wave-generated fluid mud deposits in the Tilje Formation (Jurassic), offshore Norway[J]. Geology, 2009, 37(6): 539-542.
[21]	Fan D D, Wang Y, Liu M. Classifications, sedimentary features and facies associations of tidal flats[J]. Journal of Palaeogeography, 2013, 2(1): 66-80.
[22]	阳孝法，谢寅符，张志伟，等. 奥连特盆地白垩系海绿石成因类型及沉积地质意义[J]. 地球科学，2016，41（10）：1696-1708. Yang Xiaofa, Xie Yinfu, Zhang Zhiwei, et al. Genetic type and sedimentary geological significance of Cretaceous glauconite in Oriente Basin, Ecuador[J]. Earth Science, 2016, 41(10): 1696-1708.